Gilchrist is a legend wrote on 02/22/12 at 20:09:52:
The problem is that there are too many of them, and too many people play them too often. When I try to play a main line opening against 1. d4 (Grünfeld, King's Indian, etc.), I would estimate 85% of the time people play Torre, Trompowsky, Colle, Veresov, London, etc. Even more annoying is that even at my level (~2250) I have to play against these openings. Playing against these openings for ~85% of 1. d4 for years gets annoying eventually, despite their lack of theoretical advantage. It is also annoying spending more time on studying 1. d4 openings without 2. c4 than actual main lines...
This sort of backs up what MartinC (iirc) has been arguing here, that amateur players in Britain (assuming you play a lot of your chess there) seem to know even less theory than in other countries? That's surprising if true, since so much of the opening theory available is English-language and even published in Britain!
My experience, playing at 2100-2200 level mostly in Scandinavia and Germany, is very different. I've played mostly the Leningrad Dutch, the Tango and the Grünfeld against 1.d4, and more often than not I've gotten main lines within those openings, not d-pawn specials. I do get the London (boring, but that's White's privilege) and the Trompowsky (interesting and unbalanced, so I don't mind) occasionally, but that's about it!
Btw. In the Dutch I would consider 2.Nc3, 2.Bg5 and 2.e4 the de facto main lines along with the standard setup d4/g3/Bg2/c4/Nf3/Nc3/0-0 if Black uses the 1...f5 move order. These are serious tries for advantage and Black shouldn't think of them as sidelines or cop-outs.
Of course on the internet it's a different story and d-pawn specials can be expected, but I don't lose sleep over that since online blitz is just harmless fun.
For some reason players even 2100-2400 play d-pawn specials against me more often than the main lines. One IM that I played a few times played the Veresov twice against me. Another IM that I have played against many times always plays the Torre against me. Either they inexplicably play those openings regularly or perhaps it is part of their strategy to play boring openings against me...